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			<h1>common_schema</h1> <strong>2.2</strong> documentation
			<div class="subtitle">DBA's framework for MySQL</div>
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				<h2><a href="killall.html">killall</a></h2>	
<h3>NAME</h3>
killall(): Kill connections with by matching GRANTEE, user or host

<h3>TYPE</h3>
Procedure

<h3>DESCRIPTION</h3>
<p>
	Kill connections by matching connection GRANTEE, user or host with given input. 
	This routine provides with a quick "kill those connections right now" solution,
	which is otherwise achieved by looking up connection IDs from SHOW PROCESSLIST,
	or by <a href="eval.html">evaluating</a> the <a href="processlist_grantees.html">processlist_grantees</a> view.</p>
<p>
	<i>killall()</i>, similar to unix' <i>killall</i> command, kills by name rather than
	by ID. <i>killall()</i> accepts a <strong>grantee_term</strong> input, which may be
	either a fully qualified GRANTEE (e.g. 'gromit'@'webhost.local'), a relaxed GRANTEE
	(e.g. gromit@localhost), a username	only (e.g. 'gromit') or a hostname only 
	(e.g. 'analytics_server.localdomain').
</p>

<p>
	Thus, it makes it easy to quickly kill, for example, all connections by a given user, 
	wherever that user may connect from.
</p>

<p>
	<i>killall()</i> allows killing of all connections, including those of users with the
	<strong>SUPER</strong> privilege, as well as replication. However, <i>killall()</i> is
	guaranteed never to kill the current connection - the very one invoking the routine.
</p>

<p>
	Whatever the <strong>grantee_term</strong> is, it is compared against GRANTEE accounts,
	and <i>NOT</i> against particular connections. Thus, the following:
<blockquote><pre>
call killall('192.168.0.%');
</pre></blockquote>
	will kill all connections of accounts where the host part of the account equals 
	<strong>'192.168.0.%'</strong>. It will <i>NOT</i> necessarily kill all connections 
	from hosts matching the pattern. <i>killall()</i> does not do pattern matching.
	To illustrate, it will <i>NOT</i> kill a connection by the GRANTEE 
	<strong>'gromit'@'192.168.0.10'</strong>. It <i>will</i> kill connections by
	<strong>'preston'@'192.168.0.%'</strong>.
</p>

<p>
	<i>killall()</i> does not provide the mechanism to kill queries which are slow,
	or include a given text. Use <a href="eval.html">eval()</a> and 
	<a href="processlist_grantees.html">processlist_grantees</a> for that.
</p>

<h3>SYNOPSIS</h3>
<p>
<blockquote><pre>killall(IN grantee_term TINYTEXT CHARSET utf8) 
  READS SQL DATA</pre></blockquote>
</p>
<p>
  Input:
  <ul>
    <li><strong>grantee_term</strong>: a GRANTEE, qualified or unqualified, or the user or host parts of a GRANTEE.</li>
  </ul>
</p>

<h3>EXAMPLES</h3>
	<p>
		Kill all connections by user <strong>'apps'</strong>:
	<blockquote><pre>mysql&gt; SHOW PROCESSLIST;
+----+------+-----------+---------------+---------+------+------------+---------------------+
| Id | User | Host      | db            | Command | Time | State      | Info                |
+----+------+-----------+---------------+---------+------+------------+---------------------+
|  7 | root | localhost | common_schema | Query   |    0 | NULL       | SHOW PROCESSLIST    |
| 78 | apps | localhost | NULL          | Query   |   31 | User sleep | select sleep(10000) |
+----+------+-----------+---------------+---------+------+------------+---------------------+
2 rows in set (0.00 sec)

mysql&gt; CALL killall('apps');

mysql&gt; SHOW PROCESSLIST;
+----+------+-----------+---------------+---------+------+-------+------------------+
| Id | User | Host      | db            | Command | Time | State | Info             |
+----+------+-----------+---------------+---------+------+-------+------------------+
|  7 | root | localhost | common_schema | Query   |    0 | NULL  | SHOW PROCESSLIST |
+----+------+-----------+---------------+---------+------+-------+------------------+
1 row in set (0.00 sec)
</pre></blockquote>
	</p>


	<p>
		Kill all <strong>'localhost'</strong> connections:
	<blockquote><pre>mysql&gt; SHOW PROCESSLIST;
+----+------+-----------+---------------+---------+------+------------+---------------------+
| Id | User | Host      | db            | Command | Time | State      | Info                |
+----+------+-----------+---------------+---------+------+------------+---------------------+
|  7 | root | localhost | common_schema | Query   |    0 | NULL       | SHOW PROCESSLIST    |
| 81 | apps | localhost | NULL          | Query   |   18 | User sleep | select sleep(10000) |
+----+------+-----------+---------------+---------+------+------------+---------------------+
2 rows in set (0.00 sec)

mysql&gt; CALL killall('localhost');

mysql&gt; SHOW PROCESSLIST;
+----+------+-----------+---------------+---------+------+-------+------------------+
| Id | User | Host      | db            | Command | Time | State | Info             |
+----+------+-----------+---------------+---------+------+-------+------------------+
|  7 | root | localhost | common_schema | Query   |    0 | NULL  | SHOW PROCESSLIST |
+----+------+-----------+---------------+---------+------+-------+------------------+
1 row in set (0.00 sec)
</pre></blockquote>
Note that process <strong>#7</strong> is not killed since it is the one executing the kill. 
	</p>




<h3>ENVIRONMENT</h3>
MySQL 5.1 or newer

<h3>SEE ALSO</h3>
<a href="query_script_eval.html">eval</a>,
<a href="eval.html">eval()</a>,
<a href="processlist_grantees.html">processlist_grantees</a>,
<a href="processlist_top.html">processlist_top</a>,
<a href="sql_accounts.html">sql_accounts</a>

<h3>AUTHOR</h3>
Shlomi Noach
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					<h3>ROUTINES</h3>
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